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  • Users: AspenMech
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  1. AspenMech

    pickling/passivation after fabrication completed

    Hi all, What would be the normal internal cleaning procedure for vessels after fabrication? when is pickling or passivation required? Thanks,
  2. AspenMech

    Inconel overlay for tubesheet in hydrogen service

    Hi, Our heat exchanger specialist specified inconel overlay for tubesheets on the tube side which is hydrogen service. Is this necessary? The tubesheet and tubes are 1 1/4Cr. Thanks,
  3. AspenMech

    PIP VECST001/VESST002 & API 660 standards

    Hi all, I am looking for what standards to use for shell & tube heat exchangers. There are PIP standards VECST001/VESST002 for shell and tube heat exchangers. It has some overlaps with API 660 and some are not in API 660. My questions is: If I specify API 660 for the heat exchangers, do I...
  4. AspenMech

    Rated flow rates not in 80% to 110% of BEP flowrates

    Hi all, I got a quote of a API 610 pump with an efficiency of 38%. I asked the vendor if there are any pumps with an higher efficiency. They have a pump with an efficiency of 48% at the given rate but it is below 80% of the BEP flow rates. What would be the problems if the flow rate is below...
  5. AspenMech

    Is ASME U stamp required for buffer/barrier fluid reservoir

    Hi all, if the buffer/barrier fluid reservoir (seal plan 52) is designed to ASME Sec VIII, is a U stamp required?
  6. AspenMech

    API stamp for API 610 pumps

    Hi all, is API stamp required for API pumps?

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